Improvement in window-screens



E. L. LLOYD. Window-Screen.-

No. 205,658. Patented July 2,1878.

alven?? NAPErEi'S, PHOTD-UTMOGRAFHER, wASHxNGT UNITED STATES PATENT OFFICE.

EDVIN L. LLOYD, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN WINDOW-SCREENS.

Specification forming part of Letters Patent No. 205,658, dated July 2, 1878; application filed May l1, 1878.

To all whom it may concern:

Be it known that l, EDWIN L. LLOYD, of Philadelphia, Pennsylvania, have invented a new and useful Improvement in Adjustable Window-Screens, of which the following is a specification:

My invention relates to an improvement in that class of window-screens in which a fixed screen-frame is combined with an adjustable strip or strips, by means of which it is adapted to windows ot' diiierent sizes, the object of my improvement being to so construct a screen of this class that the frame will be light and neat in appearance and the sliding` portions of the frame retained in any position to which they are adjusted. This object I attain in the Inailner which I will now proceed t0 describe, reference being had to the accompanying drawing, in which- Figure 1 is afront view of my improved adjustable window-screen; Fig. 2, a sectional plan on the line l 2; Fig. 3, a sectional plan on the line 3 4, and Fig. 4L a vertica-l section on the line 5 (i.

A is the screen, carried by a frame consisting of top and bottom bars a., which do not extend entirely across the screen, a portion of each end ofthe latter being unconiined.

B B are the sliding frames, each of which has horizontal portions b b and a vertical post, d. The horizontal portions b ci' the frames B are grooved to receive the bars a ofthe screenframe, and can slide freely on said bars a; and in the vertical post d of each frame is an angular slot, c, adapted for the reception ofthe unconiined end of the screen A, so that, as the frames B B are moved in or out, the ends of the screen slide freely in the slotted posts d, suitable pins z' on the bars b and bent plates on on the bars a serving1 as stops to prevent undue outward movement of the frames B.

To the top bar b of one frame B is hung a bar, n, having on the lower edge teeth adapted 1o a lug, l, on the top bar of the other frame B. By this means I prevent accidental inward movement of either ofthe frames after they have been adjusted to their proper positions. As each of the frames B is arranged to embrace the screen on three sides, said frames are rigid throughout, so that a single retaining-bar, n, on the upper bar b is suicient to maintain the frames in their proper positions, whereas a strip adapted to the end only ofthe screen would require a retainer both at top and bottom.

The bar u may be simply notched instead ot' toothed on the under side; but the latter plan is preferred.

I prefer to provide the frames B with sheetmetal casings F, as shown at the right-hand side of Figs. 2 and 3, the interior ot' each casing coinciding with the slot e in the post d,"to which it is secured, and serving to receive the i'ree end of the screen as the frame B is moved inward. The end of the screen may, however, be allowed to project from the slot without being covered, as shown at the left-hand side of Figs. 2 and 3. By this means l am enabled to make thel posts d comparatively narrow, and yet permit an extended movement of the frames B. One adjustable frame only might in some cases be use'l but the use of two adjustable frames is preferable.

My improved screen is light and attractive in appearance, the screen proper being unobstructed from end to end, and all unsightly cross-bars in the center ot' the screen being dispensed with.

I claim as my inventionl. The combination of the screen A, having top and bottom bars a, which do not extend to the ends of the screen, with the adjustable frames B, having curved or angular slots c, which receive and guide those portions ofthe screen A projecting beyond the ends of the bars a., all substantially as described.

2. The combination of the screen A, unconfined at the end, with an adjustable frame B, having a slotted post, d, and casing F, as specified.

3. The combination of the adjustable portions B of the frame, arranged to embrace three sides ofthe screen, with the notched or toothed bar n and lug t, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWIN L. LLOYD.

Witnesses HARRY A. CRAWFORD, HARRY SMITH. 

